Determining the maximum age and weight of juvenile (Acipenser stellatus) for release into the Caspian Sea

  A total of 1,200 A. stellatus juveniles at different ages of 55, 69, 77 and 85 days were stored at a density of 100 eggs per square meter. Habitation of A. stellatus juveniles in four breeding treatments including 55 days (0.5-1 g), 69 days (1-3 g), 77 days, (3-5 g) and 85 days (5-10 g) in water Accepted and 4 experiments in different salinities (0-- 0-5, 4-5 /., 9-4 and 9-13) and each experiment was designed in 4 treatments and each treatment had 3 replications. The results of the present study showed that the best breeding period for releasing juvenile A. stellatus fish into the sea (salinity 9-13) during 77 and 85 days (3 to 5 and 5 to 10 g) (df = 3, F = 8.933 P = 0.006) and (, df = 3, F = 68.800 P = 0.000). Is, which has the lowest loss rate.